123022142 has 4 divisors (see below), whose sum is σ = 184533216. Its totient is φ = 61511070.

The previous prime is 123022127. The next prime is 123022153. The reversal of 123022142 is 241220321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241220321 = 757 ⋅318653.

It is a self number, because there is not a number n which added to its sum of digits gives 123022142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30755534 + ... + 30755537.

It is an arithmetic number, because the mean of its divisors is an integer number (46133304).

Almost surely, 2^123022142 is an apocalyptic number.

123022142 is a deficient number, since it is larger than the sum of its proper divisors (61511074).

123022142 is an equidigital number, since it uses as much as digits as its factorization.

123022142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61511073.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 123022142 is about 11091.5346999412. The cubic root of 123022142 is about 497.3488233709.

Adding to 123022142 its reverse (241220321), we get a palindrome (364242463).

The spelling of 123022142 in words is "one hundred twenty-three million, twenty-two thousand, one hundred forty-two".